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<html lang="cn">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css"></style>
   
</head>
<body>
    <script>
        //console.log(n5);//NO
    </script>
    
    <script>
        var a = "JS....";
        //var 变量=值;
        var n1 = 11,n2=5,n3=111;
        var n5=n6=n7=true;

        //ES5 let/const ...
        console.log(a);
        //consle.log(变量);
        console.log(n3);
        console.log(n6);
    </script>

    <script>
        console.log(n5);
    </script>

   
</body>
</html>


